Benchmark: running Step 1, Step 2, Step 3 for at least 10 CPU seconds...
    Step 1: 10 wallclock secs (10.47 usr +  0.02 sys = 10.49 CPU) @ 185755.48/s (n=1948575)
    Step 2: 11 wallclock secs (10.48 usr +  0.02 sys = 10.50 CPU) @ 187398.10/s (n=1967680)
    Step 3: 10 wallclock secs (10.01 usr +  0.00 sys = 10.01 CPU) @ 315978.92/s (n=3162949)